KR20200087004A - A animal bone plate for being implanted into the distolateral surfacief femur in distal femur osteotomy surgray - Google Patents

Abstract

The present invention relates to an animal bone plate implanted in the distal femur of a small dog. More particularly, the present invention relates to a bone plate for an animal, which is a long plate implanted on the lateral side during a cut to the distal femur of a small dog, can be bent to correspond to the femur bones formed in various curved surfaces depending on the types of the small dog and the size of the adult, thereby increasing attachability. By having a hole that enables temporary coupling by a pin (k-wire) before the main coupling by a screw, a screw is coupled in place and implanted.

Description

A animal bone plate for being implanted into the distolateral surfacief femur in distal femur osteotomy surgray}

The present invention relates to an animal bone plate that is implanted on the distal portion of the thigh of a small dog, and more specifically, to a long plate body that is implanted on the lateral surface during a trimming of the distal portion of the small dog, depending on the type and adult size of the small dog. Accordingly, it is possible to improve the adhesion by flexing in response to the thigh formed in various curved surfaces, and the screw is in place by providing a hole that enables temporary coupling by a pin (k-wire) before the main coupling by the screw. It relates to a bone plate for animals that are bound to be implanted.

The bone plate is an implantable plate that is fixed to the surface of the bone on both sides or one side of the fracture to support and stabilize the fracture. These bone plates are usually attached by joining screws so as to partially enter the bone from the plate. That is, the screw head is placed on the bone plate, and the screw body passes through the bone plate in a specific direction to partially enter the bone so that the bone plate and the bone are integrally combined. In particular, when the first fracture bone and the second fracture bone are separated by a fracture, one end of the bone plate is coupled to the first fracture plate while the first fracture bone and the second fracture bone are grafted, and the other end of the bone plate is the second bone. It is combined with the plate to fix the fractured bone.

In recent years, as the interest in pets increases and the market of the pet industry increases, there is a great interest in the health of pets, and treatment or procedures similar to human treatment are being performed.

In the case of canine animals among pets, degenerative arthritis of the knee joint is easily caused by a large load on the knee joint, which causes the knee to deform due to various diseases or acquired factors such as bending of the knee. Alignment of the knee joint, the distal part of the bone, may be abnormal.

As a method for correctly aligning the abnormally deformed thigh bone, a part of the thigh bone is incised by bending and fixed with a bone plate made of metal.

However, the bone plate used for the bending procedure is not provided for small dogs of 8 kg or less. That is, the small dog bone plate is not provided in consideration of the anatomical structure and biomechanics of the small dog's thigh bone because the human body is provided with different lengths and thicknesses, or the size of the large dog bone plate is reduced. This has a large error range on the curved surface of the bone of the small dog and the curved surface of the bone plate, so the adhesion is low, and the supporting force provided by the bone plate decreases, and surgical complications such as inflammation caused by the shaking of the bone plate may frequently occur. In addition, if the forcefully spaced bone plate is interviewed to the bone by increasing the screwing force to remove the spaced apart gap, a problem occurs in that the portion protruding in the bone direction strongly presses the bone by bending the bone plate, causing bone damage. Can be.

Korean Registered Patent No. 10-1681556 (Registration on Nov. 25, 2016; hereinafter referred to as'Prior Art 1') proposed a fixation mechanism for obstructive distal femur osteotomy. The prior art document 1 is composed of a body portion and a head portion in which a plurality of screw coupling holes are formed, and the two coupling holes formed in one row of the head portion are characterized in that the line connecting the center portion is twisted to have an inclination of 3 to 5 degrees from the horizontal line. Doing. However, in the prior art document 1, only the portion connecting the head portion and the body portion in the longitudinal direction forms a bent portion, so that it does not sufficiently correspond to the longitudinal bending surface of the thigh bone, which is the implanted position, and a large gap occurs. It is low and surgery complications can occur frequently.

Korean Registered Patent No. 10-1740905 (Registration on May 23, 2017; hereinafter referred to as'Prior Art 2') proposed a fixation mechanism for open proximal tibial osteotomy. The preceding document 2 is also composed of a head portion and a fixed plate to which a screw is coupled, but is provided in a structure corresponding to a longitudinal curved surface of the tibia by bending only in one connection portion of the head portion and the fixed plate in the longitudinal direction. Similarly, the adhesion between the bone plate fixing mechanism and the bone is low.

In particular, in the case of small dogs, the thickness of the bone varies in the longitudinal direction depending on the breed, but it is formed into a variety of curved surfaces. However, by providing a bone plate applied to the human body or a large dog by simply reducing the size, the bone surface of the small dog and the curved surface of the bone plate are inconsistent and fractured. It did not provide enough fixation for the two bones.

Therefore, there is a need for a device that enables close and secure attachment to various curved surfaces of small dogs.

Korean Registered Patent No. 10-1681556 (Registration on Nov. 25, 2016): Fixation device for obstructive distal femur osteotomy Korean Registered Patent No. 10-1740905 (Registration on May 23, 2017): Fixation device for open proximal tibial osteotomy

Animal bone plate of the present invention for solving the problems of the prior art as described above,

To provide a device that can be easily adhered to the outer surface of the bone of the implanted portion by forming a plurality of notches corresponding to each other on both sides of the rod-like plate body, thereby lowering the structural strength of the portion where the corresponding pair of notches are formed to easily bend. The purpose.

The bone plate for animals of the present invention for solving the above problems,

In the bone plate for animals to be implanted in the distal portion of the thigh bone of a small dog, it has a certain width and is formed long in the longitudinal direction, a plurality of coupling holes and long holes are formed in the longitudinal direction, and incision of the thigh bone through the coupling hole And the first body portion coupled to the upper side; A second body portion extending integrally with the first body portion, bent in a left or right direction, and having a plurality of coupling holes formed in a longitudinal direction inside; Consisting of, the coupling hole and the long hole of the first body portion, the coupling hole of the second body portion is disposed in the longitudinal direction, between the coupling hole and the long hole notches are formed so as to face each other on both sides of the pair of notches facing each other The structural strength of the first body portion or the second body portion may be lowered around an imaginary line connecting to allow bending to occur due to external force.

The first body portion is sequentially formed with a first coupling hole, a second coupling hole, and a long hole in the direction from the end to the second body portion, and the second body portion is connected to the other end of the third to fifth from the portion connected to the first body portion The balls are sequentially formed, and the first notch, the second notch and the third notch are formed on both sides so that the first coupling hole, the second coupling hole, the long hole, and the third coupling hole are opposed to each other, and the third coupling A fourth notch is formed on the curved outer side of the ball and the fourth coupling hole, and a fifth notch is formed on both sides of the fourth coupling hole and the fifth coupling hole.

In addition, the fourth and fifth notches formed in the second body portion, the inner fifth notch, the outer fifth notch and the fourth notch are arranged in a triangle so as to face each other, and a fourth coupling hole is formed in the triangle arrangement. It can be done.

In addition, a first fixing hole into which a K-wire is inserted is formed between the first coupling hole and the second coupling hole in the first body portion, and between the third coupling hole and the fourth coupling hole having a curved intermediate angle in the second body portion. A second fixing hole can be formed to temporarily fix the bone.

In addition, the second fixing hole is formed at a position that is deflected to be close to the edge of the inner portion bent from the center of the width of the second body portion, and the second body is pushed by the pushing force of the first fixing hole and the second fixing hole during temporary fixing. It is possible to prevent the addition of hearing.

In addition, the second body portion forms an extension extending inwardly to the bent portion, and the end portion of the second body portion is as close as possible to the virtual line connecting the first fixing hole and the second fixing hole by forming a second fixing hole in the extending portion It can be arranged to prevent lifting.

In addition, the notch, the overall width reduction to form narrow in the width direction of the first body portion and the second body portion, and the thickness of the first body portion and the second body portion from the lower surface or the middle of the contact with the bone toward the upper surface Reducing the inclined width gradually forming a narrow width; Either or both may be formed to partially lower the structural strength.

The notch may be formed to have an upward inclined surface at an angle of 30 to 50 degrees from a horizontal plane.

The bone plate for animals of the present invention by the above solution,

By forming a number of notches, the bone plate can be bent around the notch as needed, so that it can be configured to be as close as possible to correspond to the outer surfaces of various small dogs. In particular, the bone plate can be bent in three axes by the triangular arrangement of the notch, so that it can be closely mounted in response to various bone curved surfaces.

In addition, the bending of the bone plate can be variously adjusted by the notch, so it can be mounted while increasing the adhesion in response to small dogs of various sizes.

In addition, through the process of temporarily fixing by incorporating the K-wire into the first fixing hole and the second fixing hole, it is possible to easily provide the screw-in position that is the coupling, thereby minimizing the bone damage caused by re-perforation due to the existing positioning error and restoring speed. It has become possible to provide a useful device that can improve the.

1A is a plan view showing an animal bone plate according to a preferred embodiment of the present invention.
1B is a side view of the right thigh bone equipped with an animal bone plate according to the present invention.
1C is a front view of the right thigh bone equipped with an animal bone plate according to the present invention.
Figure 2 is a plan view showing the arrangement of the notch formed in the second body portion according to an embodiment of the present invention.
3A and 3B are cross-sectional views of a notch according to an embodiment of the present invention.
4 is a plan view showing a bone plate for animals with a first fixing hole and a second fixing hole formed according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. The present invention may be variously modified and may have various forms, and specific embodiments will be illustrated in the drawings and the present invention will be described in detail in the text. However, this is not intended to limit the present invention to specific disclosure forms, and it should be understood that all modifications, equivalents, and substitutes included in the spirit and scope of the present invention are included. In describing each drawing, similar reference numerals are used for similar components. In the accompanying drawings, the dimensions of the structures are enlarged or reduced than actual ones for clarity of the present invention.

Terms used in the present application are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In the present application, the terms "include", "have" or "have" are intended to indicate that there are features, numbers, steps, actions, elements or combinations thereof described in the specification, or one or more thereof. It should be understood that the above or other features or numbers, steps, actions, components or combinations thereof are not excluded in advance.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by a person skilled in the art to which the present invention pertains. Terms commonly used and defined in the dictionary should be interpreted as having meanings consistent with meanings in the context of related technologies, and are not to be interpreted as ideal or excessively formal meanings unless explicitly defined in the present application. .

1A is a plan view showing an animal bone plate according to a preferred embodiment of the present invention, FIG. 1B is a side view of the right thigh bone equipped with an animal bone plate according to the present invention, and FIG. 1C is for an animal according to the present invention It is a front view of the right thigh bone equipped with a bone plate.

As referenced, the animal bone plate 10 of the present invention is mounted to be implanted in the distal portion of the thigh bone 70 of a small dog.

The animal bone plate 10 is formed to be elongated in the longitudinal direction, a plurality of coupling holes 40 and elongation holes 50 are formed in a row, the first body portion 20 formed in a straight line, and left or right It is composed of a second body portion 30 formed of a curved plate that is bent at a certain angle.

The first body portion 20 is formed in a straight shape to be attached in the longitudinal direction to the thigh bone 70 surface of the small dog and the bottom surface in contact with the thigh is formed into a concave curved surface to correspond to the outer curved surface of the thigh bone It can increase the contact area. The first body portion 20 is a plurality of coupling holes 40 and the long hole 50 is formed inwardly, it is coupled to be fixed to the incision line 71 or the thigh bone 70 on the upper side of the fracture line .

In addition, the second body portion 30 is formed of a curved surface that is bent at a certain angle in the left or right direction to fit the left and right sides of the thigh bone. The second body portion is also formed with a certain width, and a plurality of coupling holes 40 are formed in a row in the longitudinal direction inside, and are fixed to the incisor 71 or the lower thigh bone of the fracture line.

Notches 60 are formed on both sides of the coupling hole 40 and the long hole 50 arranged in one row in the longitudinal direction. The notch 60 is formed so that a pair is opposed to each other, thereby weakening the structural strength of a portion of one notch formed than the other part, bending occurs around a virtual line connecting a pair of notches during external force, and thus bending at a certain angle. Can be done.

Preferably, the first body portion 20 has a first coupling hole 41, a second coupling hole 42, and a long hole 50 sequentially formed in the direction connected to the second body portion at the end, and the In the second body portion 30, the third coupling hole 43, the fourth coupling hole 44, and the fifth coupling hole 45 are sequentially formed in the direction of the other end in the portion connected to the first body portion.

Here, the notch 60 is a first notch (61a, 61b) of the first coupling hole 41, the second coupling hole 42, the long hole 50, the third coupling hole 43 so as to face each other ), the second notch (62a, 62b) and the third notch (63a, 63b) is formed on both sides, the third coupling hole (43) and the fourth coupling hole (44), the outer side of the fourth notch (64) Is formed, and the fifth notch 65a, 65b may be formed on both sides of the fourth coupling hole 44 and the fifth coupling hole 45.

The fourth notch 64 is formed only on the outside of the curved second body portion 30. That is, the fourth notch is formed only on the outer side, and the opposite inner portion is provided with a structure in which the structural strength is strengthened without forming the notch. When the fourth notch 64 provided in this structure receives external force, bending occurs in correspondence with the adjacent inner fifth notch 65a.

Therefore, since the inner fifth notch 65a corresponds to the outer fifth notch 65b and the fourth notch 64, bending can be generated, thereby providing three-dimensional bending by two-stage bending at one point.

As shown in FIG. 2, the fourth notch 64, the inner fifth notch 65a, and the outer fifth notch 65b are arranged in a triangle to correspond to each other so that bending occurs, and the inside of the imaginary line of the triangle is formed. The fourth coupling hole 44 can be positioned. That is, the fourth coupling hole 44 between the virtual line connecting the inner fifth notch 65a and the fourth notch 64 and the virtual line connecting the inner fifth notch 65a and the outer fifth notch 65b. When forming) ), when multi-stage bending around the imaginary line occurs, bending by bending is not formed in the fourth coupling hole, so that the fourth coupling hole portion is adhered to the outer surface of the thigh bone as close as possible to make the coupling. have.

Here, in order to facilitate bending, the inner fifth notch 65a is formed in a trapezoidal shape, and the curved points of the outer fifth notch 65b and the fourth notch 64 are the inner fifth notch 65a. It is formed so as to face, and a line bent by bending can be set arbitrarily.

As shown in FIG. 1A, the notch 60 is reduced in overall width to be narrowly formed in the width direction of the first body part 20 and the second body part 30, and upwardly inclined toward the top from the bottom contacting the bone. It can be provided in a structure formed by any one or both of the reduction of the inclined width gradually formed to narrow the width.

As an example, the second notch 62a, 62b and the third notch 63a, 63b, as shown with reference to FIG. 3A, have been reduced in overall width to make the width of the bottom surface narrower than the other portions, as shown in FIG. 3B. It can be seen that the first notch 61a, 61b, the fourth notch 64, and the fifth notch 65a, 65b do not narrow the width of the bottom surface, but only the portion of the upper portion is reduced inclined width by the surface having an upward slope. have.

In addition, as shown in FIG. 3A, overall width reduction and inclined width reduction are simultaneously performed to lower the structural strength of the corresponding portion, thereby causing bending at a set position (virtual line between notches) during external force action, so that the bone plate angle can be adjusted. .

In addition, the angle (θ) of the inclined surface 66 forming the notch 60 is formed upward at an angle of 30 to 50 degrees based on the horizontal surface. When it is formed below 30 degrees, the upper surface is excessively cut so that the structural strength is lowered, so there is a disadvantage that it is easily bent even without applying an external force for bending purposes. When formed at an angle of 50 degrees or more, the strength between two opposed notches increases, and both sides increase. It is preferable to form the notch at an angle in the above range because there is a disadvantage in that it is difficult to bend around the virtual line connecting the notches.

If the bone plate 10 for animals is configured as described above, DFO (Distal Femoral Osteotomy) or a distal femoral osteotomy (DFO) that is corrected in a straight line by incising the thigh bone can be used when the implant is mounted due to a distal fracture of the thigh bone. have.

That is, the DFO operation is partially incised on the outer curved surface of the thigh bone 70 to interview the incised upper and lower bones, and the incision line 71 has the upper thigh bone of the animal bone plate 10 of the first body part 20 The screw is fixed by coupling the screw through the long hole 50, and the screw is fixed through the coupling hole 40 of the second body part 30 of the bone plate to the lower thigh bone of the incision line. At this time, the upper and lower thigh bones are in close contact with each other so as to be interviewed on the incision surface, and then a plurality of screws are fastened through the screw fastening to the long hole 50 of the first body part and the fastening hole 40 of the first body part. By bonding to the upper thigh bone, the upper thigh bone and the lower thigh bone opened by the incision are brought into close contact so that the alignment is made as straight as possible.

An animal bone plate 10 of the present invention may be further formed with a fixing hole 80 for temporarily fixing the bone.

4, a first fixing hole 81 is formed between the first coupling hole 41 and the second coupling hole 42 in the first body portion 20, and the second body portion 30 ), a second fixing hole 82 may be formed between the third coupling hole 43 and the fourth coupling hole 44. Here, the position in which the second fixing hole 82 is formed is located in the equally divided middle cabinet of the curved total cabinet of the second body part 30, so that the left and right sides of the bone plate are lifted from the thigh bone when pulled outward from the two points. It can be prevented from occurring, thereby maintaining a close state.

The first fixing hole 81 and the second fixing hole 82 are for fixing by inserting a commercially available K-wire.

The first fixing hole 81 and the second fixing hole 82 are formed in the first body part 20 and the second body part 30, which are disposed up and down around the fracture line or the incision line, respectively, and the two bones are opened. Place the bone plate in a state where the parts are in close contact, and through the first fixing hole 81 and the second fixing hole 82, a small puncture is made to minimize the damage to the bone, and the pin is formed through the first fixing hole and the second fixing hole. (K-wire) is inserted to make temporary fixation to prevent the bone from opening.

This temporary fixing can set the position of the bone plate 10 without coupling a screw having a large diameter several times or more. This may provide the effect of shortening the recovery time by minimizing the site of bone damage due to re-perforation, which occurs during screw recombination, as the screw may not be engaged in the process for positioning prior to the present coupling.

In addition, the second fixing hole 82 is preferably formed at a position that is deflected to a portion of the second body portion 30 that is close to the edge of the inside direction that is bent from the center of the width. This is the first fixing hole 81 and the second fixing hole 82 when the temporary fixation of the thigh bone with a pin, when the force acts in the direction of the incision of the upper and lower thighs of the incision line, the first and second fixing holes The pin coupled to the force acts in the opening direction. At this time, when the position of the second fixing hole 82 is located in the middle of the width of the second body portion, distortion occurs between the first fixing hole 81 and the second fixing hole 82 so that one side of the bone plate is lifted and bone and There is a disadvantage that the adhesion of the weakened. Therefore, by moving the second fixing hole in the inner direction, which is a position similar to a virtual line connecting the end of the second body portion 30 and the end of the first body portion 20, the distortion is minimized by minimizing distortion and weakening of adhesion to the bone. Can be prevented.

In addition, the second body portion 30 further forms an extension portion 31 in the inner direction, and forms a second fixing hole 82 in the extension portion to connect the ends of the first body portion and the second body portion. Minimize the bone plate lift due to distortion by allowing the second fixing hole to be placed close to the virtual line or to close the end of the second body portion on the virtual line connecting the first fixing hole 81 and the second fixing hole 82. can do.

10: animal bone plate
20: first body part
30: second body part
31: extension
40: coupling hole
41 ~ 45: the first to fifth coupling hole
50: long hole
60: notch
61a,61b: 1st notch 62a,62b: 2nd notch
63a, 63b: 3rd notch 64: 4th notch
65a, 65b: fifth notch 66: slope
70: thigh bone
71: incision
80: fixed hole
81: first fixing hole 82: second fixing hole

Claims (8)

In the bone plate for animals implanted in the distal portion of the thigh of a small dog,
It has a certain width and is formed long in the longitudinal direction, and a plurality of coupling holes (40, 41, 42) and an elongation hole (50) are formed in the longitudinal direction, and are coupled to the incised upper side of the thigh bone through the coupling hole. A first body part 20 to be;
A second body portion 30 extending integrally with the first body portion, bent in the left or right direction, and having a plurality of coupling holes 40, 43, 44, and 45 in the longitudinal direction inside; Consisting of,
The coupling holes 41 and 42 and the long hole 50 of the first body portion 20 and the coupling holes 43, 44 and 45 of the second body portion 20 are disposed in the longitudinal direction, and the coupling Between the ball and the long hole, notches 60 are formed so as to face each other on both sides to reduce the structural strength of the first body part or the second body part around an imaginary line connecting the pair of opposite notches so that bending occurs by external force. Animal bone plate, characterized in that one. According to claim 1,
In the first body portion 20, the first coupling hole 41, the second coupling hole 42, and the long hole 50 are sequentially formed in the direction of the second body portion from the end,
In the second body portion 30, third to fifth coupling holes 43 to 45 are sequentially formed from a portion connected to the first body portion to the other end portion,
Between the first coupling hole 41, the second coupling hole 42, the long hole 50, and the third coupling hole 43, the first notches 61a, 61b, and the second notch 62a so as to face each other ,62b) and the third notches 63a, 63b are formed on both sides,
The fourth notch 64 is formed on the curved outer side of the third coupling hole 43 and the fourth coupling hole 44,
The fourth coupling hole 44 and the fifth coupling hole 45, the bone plate for animals, characterized in that the fifth notch (65a, 65b) is formed on both sides. According to claim 2,
The fourth notch 64 and the fifth notch 65a, 65b formed in the second body portion 30,
The inner fifth notch 65a, the outer fifth notch 65b, and the fourth notch 64 are arranged in a triangle so as to face each other, and the fourth coupling hole 44 is formed in the triangle arrangement. Animal bone plate. According to claim 2,
The notch 60, the entire width reduction to form narrow in the width direction of the first body portion 20 and the second body portion 30, and the lower portion of the thickness of the first body portion and the second body portion in contact with the bone Reducing the inclined width gradually forming a narrower width from the surface or the middle to the upper surface; One or both of the formed bone plate for animals, characterized in that to partially lower the structural strength. According to claim 4,
The notch 60, the bone plate for animals, characterized in that formed to have an upward inclined surface 66 of an angle of 30 to 50 degrees from the horizontal plane. According to claim 2,
A first fixing hole 81 into which a K-wire is inserted is formed between the first coupling hole 41 and the second coupling hole 42 in the first body portion 20,
The second body portion 30, the third coupling hole 43 and the fourth coupling hole 44 by forming a second fixing hole 82, bone bone for animals characterized in that to temporarily fix the bone. The method of claim 6,
The second fixing hole 82 is formed at a position that is deflected to be close to the edge of the inside portion bent from the center of the width of the second body portion 30, and is applied to the pushing force of the first fixing hole and the second fixing hole during temporary fixing. Bone plate for animals, characterized in that to prevent the second body portion by lifting. The method of claim 7,
The second body portion 30 forms an extended portion 31 extending in a curved inner side, and a second fixed hole 82 is formed in the extended portion 31 to form a first fixed hole 81 and a second fixed body. Animal bone plate, characterized in that to prevent the lifting by placing the end of the second body portion as close as possible on the virtual line connecting the fixing hole (82).

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